Pulverizing-machine



3 Sheets--Sheet V1..

Patented Oct. 9

R. D. GATES. PULVERI'ZING MAGHINE,

4(No Model.)

(No Mqdel.) i v 3 Sheets-Sheet 2. R. D. GATES. PULVBRZING MACHINE.

No. 286.290. Patented 0011.9, 188s.

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(No Model.) I 3 sheets-sheet 8.

l R. D. GATES.

PULVERIZING MACHINE.

No. 288,298. y Patented 088. 9, 1888.

N, PETERS. Pmm-mmanphgr. wasningwm D, C

'o a/ZZ whom, t may concern.'

VBe it known that l, RYnnsoND. GATES, of screen,

PATENT illlEEiCE.

nrEnsoN D. earns, or CHICAGO, intinois.

PULvEmzlNo-MACHINE.

SPECIFICATION forming Chicago, in the county of VCook and State of Illinois, and a citizen o f the United States,

have invented a new and useful Improvement in Pnlverizing-Machines, of which the following is a specification. y g

My invention lrelates especially to certain novel and useful constructions and combinations of parts, whereby the pulverizing-machine patented to me in the United States J une 27, 1832, and December 19, 1882, numbered, respectively, 260,092 and 269,404, is rendered more effective, and greater convenience is afforded for repairing and adjusting it, and also improved means are provided for driving the screen and pnlverizing-rollers,while the means for connecting the parts'are improved.

In the accompanying drawings, Figure l is a vertical cross section, in the line x x. of.Fig. 2, through the shafts o f the' rollers and the supporting-ibundation of the mill, showing also the improved roller-pulverizer case in side elevation. Fig. 2 is a vertical sectional view in the line x m of Fig. l, and showing portions of the machine in elevation. Fig. 3 is a side view of the upper section, the removable side section, and one of the lower sections, to which the removable side section is bolted,` and upon which the other side section is applied by bolting lit thereto or casting it with said lower section, said parts of the inclosing` case or frame being shown asy slightly separated from one another, the sills of the foundation-support 'of the mill being shown by dotted lines. Fig. 4 is a detail side view of the lowest section of the inclosingframe or outer case, revolving screen, interior hopper, elevator-buckets, and friction drivingrollers of the screen; also, a vertical cross-sectional view of the pulverizing-rollers, tie, and supporting-rcds.l In this view the outer inclosing traine or case and the inner shells of the screen are supposed to be removed. Fig. 5 is a detail side elevation of the inner shells tied together, and a vertical cross-section of the journals of the pulverizing-ro'llers. Fig. 6 is a vertical central section of Fig. 5. Fig. 7 is a detail vertical central section of the revolving screen with the inner shells removed. Fig. '8 represents an elevator-bucket as it appears in front and end elevation.I Fig. 9 is a part of Letters Patent No. 286,290, dated October9, `1888. Application filed pril 26, 1833. (No model.)

f diagram ofthe driving-gearing and revolving the driving-pulley and balance-wheel being left orf. Fig. 10 is an enlarged sectional View of a portion of the screen, showing an elevating-bucket, the two grooved ring-plates of the screen-frame, a clamping-rod, grooved stay, and agitating-bar oi said frame, and the wood-tacking strips of the ring plates and bars. Fig. 1l is an edge elevation of the outer inclosing case or frame, and Fig. *12' is a similar view of the inner shells of the screen.

In the machine represented by the accompanying drawings two sets or pairs of pulverizing-rollers, G G', are employed, the material passing directly from one to the other set through a hopper, G2, and then dropping into the revolving elevator and screen H H. The frame or outer case, A, with its inner shellplates, B B', is so' constructed that it can be easily taken apart to get to the pulverizingrollers G G and elevator-screen H H in case of ropairsbeing necessary. lThe upper part, a, of said frame or case A is removable, like a cover, being fastened by flanges and bolts, as at a, to the intermediate flanged parts, a ax, which in like manner are fastened to the flan ged part c2, which in turn is fastened by flanges and bolts7 as at am, to 'the lowermo'st part, a, all in the manner shown. p

The plates B B of the inner shell are constructed separately, each being formed of two pieces with bolting-tlanges, so as to be bolted together after they are slipped upon the jonrnals of the pulverizing-rollers, as illustrated at U in Figs. 4, 5,'6, and 12. Theseshells are fitted over the journals of the pulveriZing-rollers, with their respective pieces unbolted at U, and then the pieces are bolted together. One ofthe shells, B, can be removed over the lefthand ends of the journals after the section a `and the section a of the inclosing case or frame A are removed, it only being necessary to unbolt the pieces at U and separate the shells at a. The elevator-buckets H are adjustable to any desired angle on their pivot ends f after slackening the clamp-bolts l, whichhold them from turning while in use. The vring-plates h? h2 of the screen H are clamped by the bolts Z against the ends of the buckets H and tenon ends of grooved metal bars h. 'This manner of constructing the screen-frame of separable plates and bars and of making the elevating- L suspended upon cross screw-rods m by means g5 g of the pulverizing-rollers G G, togetherv Fig. 8 to a united condition, as shown in Figs.

' journals of the pulverizing-rollers, while the section a2 has oblong openings, t, as hereinbe-v ofthe friction-rollers. f ings are shaped to suit the necessary adjusts bucketsseparately from the screen-#frame enl ables Ame-to repair the worn portions, and thus avoid the eXtra expense of renewing the screen entirely, asis necessary when the frame is cast in one piece. The bars h., by being filled with wood, forni a foundation upon which to'fasten the wire-gauze, and also serve for stiifening the screen-and for agitating the substances as they are being carried up by the revolving` screen-elevator. The screen is revolved by friction-rollers b2 b" on shafts b b, which shafts are driven by belts c c, set in motion by lthe shaft M5, which drives the toothed gearing of the pulverizing-rollers, as will be hereinafter described. The frame or outer inclosing-case, A., iscircular in form; and provided with outside feed-hoppers, O O, one on each side, and with an interior hopper, G?, the latter being of hook-shaped brackets m, formed on the hopper. The lower section, a, of the frame or outer case is tapered or funnel-shaped, and open for the discharge of finely -pulverized substances.

The sections (t a of the frame or outer case, A, have laterally-extending flanges (t5 a cT formed on them, a'nd when they are brought together from the separated condition shown in 1, 2, and 11, fastening-bolts u can be passed through the fianges outside of the case, and thus a strong and firm frame or outer case produced, and which is readily divisible. On the lower section, ((2, bolting-fianges (ts are provided, and these serve for sustaining thexpulverizing-machine upon the foundation-sills of the frame P. The lowermost section, ((3, is formed with a slightly-overlapping flange, c", and within this fiange the lower extremity of the section ((2 extends, and bolts am are passed through the flange and into the section ((2, as shown. At the bottoni of this section ((2 oblong openings t are provi ded, so as to vallowk of its being fitted over the friction-roller shafts, or to permit Iit to be withdrawn from said shafts.

Upon the top and bottom (see Fig. 2) of each of the side sections, ((X, bearing-brackets d* are formed, and the boxes (Z5 d for the journals with devices S for adjusting the movable journal-boxes, are applied upon these brackets in the manner shown.`

rlhe adjusting devices, with blocks and plates for retaining the boxes in proper position, are., shown as the same asin my United States patent for pulverizing machine, No. 269,404, hereinbefore mentioned, or they may be of .any other suitable construction.

The section a of the outer case or frame is provided with oblong openings (ZT, and the side sections, a (LX, with circular, nearly circular, vor other properly-shaped openings, d8, for theY fore described, to admit the'shafts or Journalsy The Irespective openv `A, as will be presently shown.

ments of thejournals of thc pulvcriZ'ing-rollers and the friction-rollers, as will be'seen by rcferring to Figs. l, 2, and S'of the drawings.

The portion of the periphery of the outer case which laps over the j oint between sections c', (LX, and (t2 and abuts against the periphery of sections a a.X is formed upon the section ((2, as indicated at d", and thus a completely-closed circular chamber can be formed notwithstanding the portions a ((X aL are constructed separately, and this will be the same whether only one .or both of the side sections, a ((X, are constructed separately from the section ((2,- and with such construction the section a is removable by slidingit off the journals of the 'pulverizing-rollers without disturbing the gearing on the right-hand side of the inclosing ease or frame A.

The pulverizing-rollers G G are formed with grinding-shells on, of hard white or chilled metal, which may, 'if necessary, be prepared in the casting with soft linings, which can be bored tapering and fitted upon tapered hubs m", whereby a wedging fit can be secured, as indicated at 87, between the shells m3 and said hubs m when the shells are drawn upon the hubs by bolts. rIhe shells, being bored tapering and fitted upon tapered. hubs, are drawn up and held firinly by means of the screwbolts m5,which pass through openings formed, respectively, half in the hubs m4 and half in the shells on, the heads of the bolts at one end and the nuts at the other binding, respectively, upon the ends of the shells and ends of the hubs, as shown in Figs. 2 and 4. Both sides of the outer case, A, arealike, and the inner shell-plates, B B, are also alike; but the journals of the rollers on one side are lengthened and receive upon them matching gear-wheels M M, and one shaft-of one pair receiving a gear-wheel, MZ, and the other shaft of the other` pair a gear-wheel, M, which Wheelsare driven by an intermediate gear-Wheel, M, on a center shaft, M5, said center shaft being boxed at one end upon the outer casing, A, and passed IOO IIO

through a spider, M, which supports and sustains the extended ends of two of the journals of the rollers G G. 'The shaft M5 being susl tained vupon the frame P and casing A, and the spider being fitted loosely on this shaft, the spider becomes suspended by the shaft, and is thereby enabled to hold up and apart the said `ends ofthe journals of the rollers G G.

0n the shaft Mi a gear-wheel, N, is provided, and this wheel is driven by a smaller gearwheel, N, on the pulley and balance-wheel shaft N2. The shaft M, by being provided with a bearing or box, M10, 011 the inclosingcase A, 'is partly supported 'by said case,while Ait, with the shaft N, is also supported by the frame P.V AThe shaft b3,while being supported upon the frame P, is supported upon the case The shaft carries a pulley, M7, and from this pulley a belt, c, passes to a pulley, 0*, of a shaft,lb3.

The shaft b leads into the case A,'being boxed at I) upon the lower section, ((i, of said case.

Upon the shaft b3 anda shorter shaft, b, driving friction-rollers Zr and b are applied, and theseshafts are connected by means of a belt, c', passed from pulley c5 on shaft b, and a pulley, c, on shaft Z1', las shown in Figs. 2 and 9.

The revolving elevating-screen is arranged centrally within the case A upon the driving diction-rollers b b, rits shouldered portion lr resting upon the rollers, while its screen or wire-gauze portion revolves between the same. The elevating-buckets H of the screen being made separate from the ring-plates lr of the` screen, and their ends formed with shortjournals f, which fit into sockets or holes formed in said plates z", can, by slackening the nuts of the clamping-bolts l, be changed in position, and by these bolts again clamped tightly between the ring-plates when they have been set at the proper angle for elevating the substances and discharging them at the top of the case fo r a second grinding operation. The buckets do not turn on their journals when in open tion; but by providing them with the journalsj and making them separate from the screen they can be set withV the proper pitch or can be adjusted very nicely, so as to he i caused to discharge more or less freely, ac-

cordingly as the speed at Vwhich the screen is operated may require, `and after being ad 0 iusted they can again be made rigid with the 'screen-frame. The tenons h of the bars 71, enter sockets in the ring plates h when the clamp-bolts are drawn up tight, and thus will be kept in position when in operation. the grooves g ofthe bars wooden strips g/ are tted, and these strips at't'ord a suitable foundation, into which tacks or screws may be inserted for securing the wire-gauze upon the metal frame. In the periph cries of the ringplates Ir of the screen, grooves g are formed, and into these grooves wood g3 is placed, so as to afford a foundation'into which the tacks or screws which secure the edges ot' the wiregauze in place may bc inserted.

The shell-plates B B slide over the journals of the rollers G G', and are supported on rods m, held by the outer case or frame, and while in position they close the side openings of the ring-plates of the screen. rIhey have apertures ttt through them, coinciding with apertures di d3 for the journals of the rollers; also, passages o5 at their upper edges,coincid ing with the two outside feed-hoppers,0, and are connected together so as to almost touch against the ringplates oi the screen, or so as to stand a short distance away from the same, by means of bolts n,which cause them to slide on the rods nz'. with adjusting shouldennuts n, and they may be either rigidly drawn up against the shellplates or have their heads or nuts cushioned Y against spi al springs. I prefer the rigid manner of tting the bolts, as shown. rlhe shell-plates B B of the screen confine the t substances to be pulverized within the screen, and thus prevent escape of the same, except when they arc iinely pulverized, when they Into The bolts n may be provided l are discharged through the meshes of the wire-gauze- The revolution of the. screen is produced bya positive motion imparted to the frictioirrollers by means of the belts and pulleys described, set in motion by the powershaft, which sets in motion the gearing for driving the pulveriZing-rollers.

The different apertures for the journals and shafts may be closed on the outside of the case A by means of spring-pressed disks or plates, such as t', in order to make everything as tight and close as possible, in the same man nei' as in my hereinbefore-mentioned patents.

The hopper is placed upon the rods in, and is supported thereby between the upper and lower sets of pulverizing-rollers, and by yits tapered sides it properly conducts the substances between the lower set of rollers, as will he clearly seen from the drawings.

I would state that theshell-plates might be made without a division at U by making the division S5 low enough down to allow the shellplates to be slipped laterally into the outer ease, and to permit the plate B to be slipped out of the case when the cap -seetion c has been removed. The section aff on right-hand side of case A maybe cast vith the part at without altering the general plan of my invention, and therefore Ido not conne myself to having section ci, although it is best for packing and transporta-tion to have the sections a' (1.x separate from section al. lf the section ax is cast with section dit will be in all respects substantially as represented, except that the division-line will not be formed, nor the hori- Zonta-l bolting-iianges a and 7 provided on the right-hand side of the sections a therebein g only the oblique bolting-lianges a with the brackets d* formed on the said section (0X.

The part a. might be modiiicd by bolting the journal-bones or" the friction-rollers b2 t* directly upon the lower edge of section a?, so that by unbolting these boxes access to the shafts b -and b could be had, or said shafts and frictioirrollers lowered for removal or other purposes 5 and the gearwheel N, pinion N, shaft N2, fly-wheel, and pulley qmay be dispensed with, and a pulley placed upon the shaft M5, which may for this purpose be eX- tcnded, and the machine driven directly from this pulley. p

In practice my improved case A, inner shellplatesjB B, revolving elevating-screen, driving friction-rollers, and interior hopper may be so modified in construction as to be adapted for use in combination with either one, two, three, or 'more sets or pairs of pulverizingrollers.

That I claim as my invention, and desire to secureby Letters Patent, is

l. r'Ihe pulverizing-roller case A, having the separately-constructed sections a and a, and` the side portion, a"-,which are provided with oblique flanges, and the fasteningbolts, the upper section, a, being of cap form and separably united to the side section, c', and portion ax by said bolts and oblique flanges, whereby both portions a a,X constructed separately from f IOO IIO

the upper section of said case is removablein an upward direction, substantially as and for the purpose described.

2. The p'ulverizingroller case A, having the separably-constructed sections a a a2 and the portion ax, which are provided with flanges, and fastening-bolts, the side sections, a (LX, being provided with journal-bearing supports, whereby a section a and the journal-bearings on a side of the outer case or frame are removable laterally after said section has been upwardly removed, substantially as and for the purpose described.

3. The pulverizer-case A, having separate sections a2 and c, united by a lapping iiange and bolts, the section a3 being movable down- VWardly, substantially as and for the purpose described.

4. The pulverizing-roller case A, formed of the top sectioma, side or middle sections, a ax, and lower sections cY and a3, in combination withv the pulverizing-rollers, the driving friction-rollers, and the journals or shafts and boxes of said rollers, substantially as and for the purpose described.

5. The combination of inner shell-plates, B B, supportingrods m, uniting-bolts n, the sectional case A, revolvingelevating-screen H H, and pulverizing-rollers, substantial] y as and for the purpose described.

. 6. The combination of the interior hopper,

G2, and supporting-rodsm,with the outer case, A, provided with outside feedhoppers, O, the the rollers G Gf, and revolving screen H, substantially as and for the purpose described.

7. The revolving screen providedwith ringplates h2, clamping-rods Z, elevator-buckets H', 1

having short journals and being adjustable between the clamping-plates, substantially as and for the purpose described.

8. The revolving screen provided with ringplates h2, clamping-rods Z, and separately-con'- structed bars of metal 7L, which are filled with Wood, as' g', and are clamped between the said ring-plates, substantially as and for vthe purpose described.

9. The revolving screen provided with the rind-Oiooved lates h2 and wood 3 substann o p .0 a.

tially as and for the purpose described.

10. The revolving screen provided with the ring-plates h2, bars h. and the Wood fillings g and g, substantially asand for the purpose dcscribed.

ll. The combination of the pulverizing-rollers, a casing therefor, a revolving elevatingscreen inclosing Vsaid rollers, the gearing for the pulveriZing-rollers, and the gearing M7 c c cl c5 c, shafts b b3, and friction-rollers bl b", for driving the revolving elevating-screen, substantially as and for the purpose described.V

12. The combination ofthe pulverizing-rollers G G, the revolving elevating-screen H H, the inclosing roller-case A, and the friction.- rollers b2 b4', for i'rictionally driving isaid screen, substantially as and for the purpose described.

13. The combination, with the rollers and inclosing-case A, of the central shaft, M5, gears M M M2 M, journals (1596, spider M, gearsN N, and pulley-shaft N2, substantially as and for the purpose described.` RYERSON D. GATES.

\Vitncsses: v Y

HARRY LAND, Louis LATTAN, Jr. 

